Model Comparison
Claude Opus 5.5 (Max, Default Fallback)
vs. K3.1 Pro
Comparing 2 AI models · 0 benchmarks · Anthropic, Kimi
Recommended Pick
KiK3.1 Pro6 metric winsStrongest on: Value, Input price, Output price
Best Value
K3.1 Pro
100.0 value score
55.1 reasoning / $4.00/1M
Lowest Price
K3.1 Pro
$2.00/1M input price
Best Reasoning
Claude Opus 5.5 (Max, Default Fallback)
57.6 reasoning score
Blends available reasoning benchmarks
Differences That Matter
Best value
K3.1 Pro has the strongest quality-to-price mix at 100.0 out of 100 value points.
Price gap
K3.1 Pro is 2.0x cheaper on input tokens than Claude Opus 5.5 (Max, Default Fallback).
Speed gap
Claude Opus 5.5 (Max, Default Fallback) generates about 2.4x as many tokens per second as K3.1 Pro.
Reasoning gap
Claude Opus 5.5 (Max, Default Fallback) leads K3.1 Pro by 2.5 points on reasoning.
Top-pick rationale
K3.1 Pro wins 6 measurable categories, including Value, Input price, Output price, Blended price.
Response Face-Off
Run one prompt through the selected models and compare response quality with live speed and cost context.
Claude Opus 5.5 (Max, Default Fallback)
Anthropic
TTFT
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Time
—
tok/s
—
Tokens
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Cost
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K3.1 Pro
Kimi
TTFT
—
Time
—
tok/s
—
Tokens
—
Cost
—
Which answer was more useful?
Secure AI Chat made in Europe
Use open-weight models like DeepSeek, Qwen and Kimi in one app.
EU-hosted open models, one API
Servers in Germany & Finland. Operated by a German company under the GDPR, DPA available, ISO 27001-certified data centres.
Full Comparison
| Metric | An Claude Opus 5.5 (Max, Default Fallback) | Top Pick Ki K3.1 Pro |
|---|---|---|
| Pricing per 1M tokens | ||
| Input Cost | $4.00/1M | $2.00/1M |
| Output Cost | $20.00/1M | $10.00/1M |
| Blended (3:1) | $8.00/1M | $4.00/1M |
| Specifications | ||
| Organization | Anthropic | Kimi |
| Release Date | Sep 22, 2026 | Oct 23, 2026 |
| Performance & Speed | ||
| Throughput | 98.2 tok/s | 41.4 tok/s |
| TTFT | 726850ms | 2890ms |
| Latency | 726850ms | 51160ms |
| Composite Indices | ||
| Value Score | 52.3 | 100.0 |
| Reasoning Score | 57.6 | 55.1 |
| Intelligence | 57.6 | 55.1 |
Key Takeaways
K3.1 Pro offers the best value at $2.00/1M,making it ideal for high-volume applications and cost-conscious projects.
Claude Opus 5.5 (Max, Default Fallback) has the strongest reasoning profile with a 57.6 reasoning score,combining the available reasoning-heavy benchmarks.
All models support context windows of ∞+ tokens,suitable for processing lengthy documents and maintaining extended conversations.
When to Choose Each Model
Claude Opus 5.5 (Max, Default Fallback)
- Complex reasoning tasks
- Research & analysis
K3.1 Pro
- Cost-sensitive applications
- High-volume processing
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